There are two amazing things about your brain that make television possible. By understanding these two facts, you gain a good bit of insight into why televisions are designed the way they are.
The first principle is this: If you divide a still image into a collection of small colored dots, your brain will reassemble the dots into a meaningful image. The only way we can see that this is actually happening is to blow the dots up so big that our brains can no longer assemble them.
The human brain's second amazing feature is this: If you divide a moving scene into a sequence of still pictures and show the still images in rapid succession, your brain will reassemble the still images into a single moving scene.
Without these two capabilities, TV as we know it would not be possible.
